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Algorithms and Data structures with Leetcode

2 Pointer Leetcode Pattern Explained

Javascript &quot;gotchas&quot; you need to know

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1. Best Time to Buy and Sell Stock
Link: https://leetcode.com/problems/best-time-to-buy-and-sell-stock/
Description: Given an array of stock prices where the i-th element is the price on day i, determine the maximum profit you can achieve by buying on one day and selling on another (with the selling day after the buying day). 

2. Ransom Note
Link: https://leetcode.com/problems/ransom-note/
Description: Given two strings, ransomNote and magazine, determine if you can construct the ransom note by cutting or rearranging characters from the magazine. (Essentially, check if ransomNote can be formed from the multiset of characters in magazine.)

3. Intersection of Two Arrays
Link: https://leetcode.com/problems/intersection-of-two-arrays/
Description: Given two integer arrays, return a list of their intersection (unique elements common to both arrays). The answer can be returned in any order. 

4. First Unique Character in a String
Link: https://leetcode.com/problems/first-unique-character-in-a-string/
Description: Given a string s, find and return the index of its first non-repeating character. Return -1 if no unique character exists. 

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Master LeetCode QUICKLY | Hash Maps, Sets , Sliding Windows

Avoid these web animations please...

Algorithms and Data structures with Leetcode

2 Pointer Leetcode Pattern Explained

Javascript "gotchas" you need to know

Master LeetCode QUICKLY | Hash Maps, Sets , Sliding Windows

Avoid these web animations please...

Algorithms and Data structures with Leetcode

2 Pointer Leetcode Pattern Explained

Javascript &quot;gotchas&quot; you need to know

Javascript "gotchas" you need to know